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Error code reference

LG Air Conditioner Error Code 34

Over-increase of discharge pressure of compressor: 3 times successive compressor off due to high pressure sensor detecting excessive high pressure.

SourceLG Air Conditioner - Service Manual: Heat Recovery Outdoor Unit R410A (ARUB80LT2)p. 123

LG codesLG air conditioner codes
Diagnostic procedure

The full 34 procedure

Step 1 is visible so you can confirm you are on the right page. The remaining steps, the ones that tell you whether to actually replace a part, unlock with any pass.

MyPros+ · DiagnosticsStep 1 preview
1
First diagnostic step
Check if service valve is opened; check transmission cable/pipe connections; check refrigerant amount.

SourceLG Air Conditioner - Service Manual: Heat Recovery Outdoor Unit R410A (ARUB80LT2)p. 123

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Where this code is documented

36 manuals in the MyPros+ library document this code for LG air conditioner.

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